electret microphone


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electret microphone

[i′lek‚tret ′mī·krə‚fōn]
(engineering acoustics)
A microphone consisting of an electret transducer in which the foil electret diaphragm is placed next to a perforated, ridged, metal or metal-coated backplate, and output voltage, taken between diaphragm and backplate, is proportional to the displacement of the diaphragm.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The boom for the electret microphone can be rotated 360 degrees and placed on either side of the headset.
An alternative option of condenser microphones is an electret microphone. In this case, the immobile armature is a plate of polarized serum.
The students worked under the guidance of James West, a Johns Hopkins research professor in electrical and computer engineering and co-inventor of the electret microphone technology developed for telephones and used today in almost 90 percent of the more than 2 billion microphones produced each year.
The work of pioneer James West, one of two inventors of the electret microphone, can be found today in 90 percent of microphones, most telephones and hearing aids.
This current Jets you connect a powered electret microphone.
5820-99-280-7276 P14360408 CT/Light Patrol Headset (Green)-- Noise-Canceling (NC) Electret Microphone The vented, single-sided headset has an NC Electret microphone fitted to a flexible boom arm.
The headset with noise compensating electret microphone provides a digital platform for the wireless communication between aircraft cockpit and ground crew, even under the noise from running jet engines or rotors.
Below this control is a 0.25" jack for the supplied, calibrated electret microphone. The user is cautioned to not use any other microphone in this jack, as the microphone receives power from the R-130, which could damage another microphone.
The Air's noise-cancelling Electret microphone is a good performer.
The M-55 electret microphone succeeded in reducing ambient noise in all of our test aircraft--including singles and piston twins--that were equipped with newer and vintage audio systems.